My favourite PHP Editor: Komodo Edit
Komodo Edit is a free and open source text editor. I like using Komodo Edit to develop my PHP programs, XHTML and JavaScript. If you hate remember functions name, variables name and functions parameter and so on, Komodo Edit is a good choice because it offers autocomplete feature. If you like Visual Studio, I believe you will enjoy Komodo Edit as well.
By the way, NetBeans also provides this feature. If you want to try alternative PHP Editor, NetBeans seems also a good choice.
Autocomplete:
Call Tips:
Links:
Komodo Edit homepage
Tags: autocomplete, Komodo Edit, PHP Editor